Delete a bunch of code

This removes the duality of DisplayList, removing a small amount of
overhead

Test: buids & hwuiunit passes

Change-Id: I8bb3a20e9ead1caec4b4a8a3e9f2c08f717a7096
diff --git a/libs/hwui/renderstate/RenderState.cpp b/libs/hwui/renderstate/RenderState.cpp
index f173136..a60e2b5 100644
--- a/libs/hwui/renderstate/RenderState.cpp
+++ b/libs/hwui/renderstate/RenderState.cpp
@@ -18,6 +18,7 @@
 #include "DeferredLayerUpdater.h"
 #include "GlLayer.h"
 #include "VkLayer.h"
+#include "Snapshot.h"
 
 #include "renderthread/CanvasContext.h"
 #include "renderthread/EglManager.h"